.back-header{
  height: 50px;
  width: 100%;
  position: relative;
  border-bottom: 1px solid #ddd;
  background-color: #fff;

  .back-button{
    background: transparent;
    width: 40px;
    height: 50px;
    font-size: 26px;
    color: #888;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 4;
    font-weight: 100;
  }

  .header-title{
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top:0;
    text-align: center;
    line-height: 50px;
    z-index: 3;
    font-size: 14px;
    color: #666;
    font-weight: bold;
  }

  .right-box{
     position: absolute;
     height: 100%;
     right: 0;
     top:0;
     z-index: 5;
     display: flex;
     justify-content: center;
     align-items: center;
  }


}